Chair



FIG. 1 is a top, front, left perspective view _of a chair showing my new design;

FIG. 2 is a right side elevational view thereof, _the left side of which corresponds;

FIG. 3 is a rear elevational view thereof; and

FIG. 4 is a perspective view similar to FIG. 1 _but showing the chair with the seat in a tipped-up condition. 

The ornamental design for a chair, substantially as shown and described. 